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Thread: How to approach x is negative

  1. November 8th, 2009 11:44 AM #1
    sampad
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    How to approach x is negative

    If x(x - 5)(x + 2) = 0, is x negative?
    (1) x2 – 7x ≠ 0
    (2) x2 –2x –15 ≠ 0
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  2. November 14th, 2009 09:29 AM #2
    mickey
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    IMO E

    not equal 0 ..doesnt give us any information about where x actually lies.
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